Did You Know...
...that the video game, Pong, was invented by a guy who graduated at the bottom of his engineering class? Nolan Bushnell spent more time running the games at a local amusement park than he did on his studies at the University of Utah. His dreams of working for Disney's amusement empire were dashed when the company wouldn't hire him. Taking a boring job, Nolan daydreamed about electronic versions of popular games. He invented Pong, the first video game, and went on to found Atari Co.
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| Number | Title | Issue Date |
| 8400357 | Radio arrival direction estimation device and radio arrival direction estimation method A radio arrival direction estimation device that accurately estimates the arrival direction of radio waves from a desired tag, even when there are multiple antennas disposed at short intervals. When ID detection timing is provided from a timing detector (114)... | 03/19/2013 |
| 8144057 | Methods and apparatus for adaptively determining angles of arrival of signals A technique for determining the angles of arrival of signals incident on an antenna array from directions within an angular region of interest involves supplying outputs of antenna elements of the antenna array to a number of different weight generators. Each of the... | 03/27/2012 |
| 7982671 | Method and system for using a wireless local area network (WLAN) phase shifter for smart antenna beam steering Aspects of a method and system for using a wireless local area network (WLAN) phase shifter for smart antenna beam steering are presented. Aspects of the system may enable determination of an angle of arrival (AOA) for signals received at a receiving station in a wi... | 07/19/2011 |
| 7477192 | Direction finding system and method In a direction finding system, pluralities of signals provided by different sets of less than all of a plurality of arrayed antennas are code division multiplexed, downconverted by a single receiver, A/D converted and separated to derive signals that are processed t... | 01/13/2009 |
| 7440758 | Cell planning methods and apparatus, and networks configured based on same Coverage areas for wireless networks are divided into a plurality of cells that are arranged in rows. Channel frequencies are assigned to cell sectors and associated with respective antenna axes. The antenna axes of adjacent rows are alternatingly rotated, thereby r... | 10/21/2008 |
| 7414578 | Method for efficiently computing the beamforming weights for a large antenna array A method of determining the size of a sub-array for an antenna array is described. The method includes choosing a number of elements of a sub-array of antenna elements. Further, the method includes determining a direction of arrival of the signal using data from the... | 08/19/2008 |
| 7414582 | Method and apparatus for all-polarization direction finding Embodiments of the present invention provide a method and apparatus for all-polarization direction finding. The method and apparatus generally include acquiring measurements at least partially corresponding to an emitted signal and generated utilizing a blind signal... | 08/19/2008 |
| 7409226 | Use of doppler direction finding to improve signal link performance in a wireless communication environment A rotating antenna is used in a wireless system to impart a phase onto a received signal by electronically moving the effective receiving antenna location along a circular path such that the modulation phase angle indicates the bearing of the radio transmission and ... | 08/05/2008 |
| 7382275 | Mobile enforcement reader A mobile enforcement reader (MER) includes an antenna, a reader coupled to receive signals from the antenna and a control/display unit (CDU) coupled to the reader. The CDU selects a receive direction and processes signals provided thereto from the reader. When the M... | 06/03/2008 |
| 7292831 | Radio communicate method and system A transmitter 1 transmits from a transmission antenna 7 a mixture signal containing a radio-frequency (RF)-band modulated signal, and a portion of power of a local oscillation signal used for frequency conversion. Meanwhile, a receiver 8 detects... | 11/06/2007 |
| 7251286 | Method and apparatus for space division multiple access receiver Methods and systems consistent with this invention receive a plurality of transmitted signals in a receiver having a plurality of receive elements, wherein each transmitted signal has a different spatial location. Such methods and systems receive the plurality of tr... | 07/31/2007 |
| 7155231 | Transmit pre-correction in a wireless communication system Techniques for pre-correction of transmit signals are disclosed. In one aspect, a transmit antenna array configurable to generate multiple transmit beams is deployed. The parameters for configuring the antenna array are computed in response to channel estimates and ... | 12/26/2006 |
| 7127272 | Designing antenna systems A design system designs a first antenna system in a communication system. The design system retrieves demographic information of customers from a first database system. The design system determines communication traffic based on the demographic information. The desi... | 10/24/2006 |
| 7092673 | Angle of arrival estimation in a wireless telecommunications network The present invention relates to estimating the Angle of Arrival (AoA) of a signal from a user equipment received at a base station of a wireless telecommunications network where the base station has a multi-beam antenna. A signal received from a user equipment is r... | 08/15/2006 |
| 7081847 | Radar system with switchable angular resolution A radar system with a radar sensor (10) which comprises a transmitting module (20), a receiving module (22) and a supply network (64), wherein the transmitting module (20) comprises a first plurality of partial antennas (26, 28,... | 07/25/2006 |
| 7010304 | Cell planning methods and apparatus, and networks configured based on same Coverage areas for wireless networks are divided into a plurality of cells that are arranged in rows. Channel frequencies are assigned to cell sectors and associated with respective antenna axes. The antenna axes of adjacent rows are alternatingly rotated, thereby r... | 03/07/2006 |
| 6950063 | Intraluminal MRI probe The present invention relates to an intraluminal magnetic resonance imaging (MRI) probe which may be used for intraluminal MRI. The present invention is sized sufficiently small to be inserted into a patient intraluminally. The probe of the present invention compris... | 09/27/2005 |
| 6922170 | Methods and apparatus for determining a direction of arrival in a wireless communication system Methods and apparatus are provided for determining a direction of arrival (DOA) (46) of a Radio Frequency (RF) signal (32) transmitted by a remote unit (22) in a wireless communication system (20). The methods comprise receiving the RF si... | 07/26/2005 |
| 6898235 | Wideband communication intercept and direction finding device using hyperchannelization A physically compact, wideband signal activity identification, demodulation and characterization, and direction finding device incorporates multiple and cascadable digital signal processing modules operating in asynchronous real time. The digital signal processing m... | 05/24/2005 |
| 6823021 | Method and apparatus for space division multiple access receiver Methods and systems consistent with this invention receive a plurality of transmitted signals in a receiver having a plurality of receive elements, wherein each transmitted signal has a different spatial location. Such methods and systems receive the plurality of tr... | 11/23/2004 |
| 6819230 | Target track crossing prediction/detection A method and system are provided for predicting and detecting the crossing of two target tracks in a bearing versus time coordinate frame. The method/system use a series of periodic bearing measurements of the two target tracks to determine a bearing rate and a proj... | 11/16/2004 |
| 6809688 | Radio communication device with integrated antenna, transmitter, and receiver A dielectric multilayer substrate 220 is formed by laminating first through third dielectric layers 201 through 203. A plurality of conductor patches 204a through 204d are arranged on the upper surface of the first di... | 10/26/2004 |
| 6707910 | Detection of the speech activity of a source The scope of the present invention is a device for detecting the source of a voice, which device comprises microphone means (2; 2a, 2b, 2M) for receiving a voice signal and detecting means for detecting the voice from the received voice s... | 03/16/2004 |
| 6697012 | Altitude estimation system and method A system and method for detecting and tracking a target object, including the calculation of the target object's altitude, is disclosed. During the processing of signals received by a receiver, the system selectively calculates the altitude of the target ... | 02/24/2004 |
| 6677884 | Satellite configuration for interferometric and/or tomographic remote sensing by means of synthetic aperture radar (SAR) For interferometric and/or tomographic remote sensing by means of synthetic aperture radar (SAR) one to N receiver satellites and/or transmitter satellites and/or transceiver satellites with a horizontal across-track shift the same or differing in amplitu... | 01/13/2004 |
| 6598009 | Method and device for obtaining attitude under interference by a GSP receiver equipped with an array antenna A GPS receiver that determines its own attitude under jamming conditions is created by augmenting it with an array antenna and a novel signal processing system. The augmented signal processing system comprises a cascaded parallel architecture inserted bet... | 07/22/2003 |
| 6587080 | Single receiver wireless tracking system A wireless tracking system consists of a wireless target including a wireless communication system for transmitting a data packet over a communication path, and a locating station for determining a position of the target. The data packet transmitted from ... | 07/01/2003 |
| 6459409 | Method and device for using array antenna to estimate location of source in near field An array antenna includes two sub-arrays. Each sub-array has at least three elements with at least one unshared element. Samplers sample elements separately for the sub-arrays. A direction-of-arrival estimator uses sampling from the samplers to make a sep... | 10/01/2002 |
| 6437740 | Single receiver wireless tracking system A wireless tracking system consists of a wireless target including a wireless communication system for transmitting a data packet over a communication path, and a locating station for determining a position of the target. The data packet transmitted from ... | 08/20/2002 |
| 6208296 | Method and apparatus for training a receiver on a source A method and apparatus for training a receiver on a source are provided. The receiver is an antenna and the source is a broadcast satellite. A first signal sensor receives at least one signal from the source. The first signal sensor may be a first low noi... | 03/27/2001 |
| 6198436 | Integrated interferometer and instantaneous frequency measurement device and method An integrated receiver includes an Instantaneous Frequency Measurement (IFM) device, an interferometer and switches. The IFM receives signals from a target and determines the frequency of the signals. The IFM includes the shared N-channel phase receiver. ... | 03/06/2001 |
| 6184830 | Compensation of direction finding estimates for polarimetric errors An algorithmic technique which allows antenna arrays that are used for interferometric direction finding to have elements with arbitrary orientation. This technique allows the phase errors associated with non-identical element orientation to be estimated,... | 02/06/2001 |
| 6009335 | Method of calibrating and testing spatial nulling antenna A method and apparatus is provided for calibrating and detecting faults in a receiver having a multi-element antenna. The method includes the steps of selecting an antenna element of the multi-element antenna and transmitting a signal through the selected... | 12/28/1999 |
| 5467682 | Action calibration for firing upon a fast target A method for firing a computerized radar weapon system upon a fast target to reduce errors in aim caused by aim-biasing factors that vary in time and space includes computing a point along an extrapolated target track ahead of the target at which to stage... | 11/21/1995 |
| 5250953 | Tracking radar systems A tracking radar system comprising an aerial arrangement having a plurality of outputs, means for deriving from the aerial outputs a sum signal representative of the sum of the aerial outputs and a difference signal representative of the direction of a ta... | 10/05/1993 |
| 5119103 | Method of steering the gain of a multiple antenna global positioning system receiver A method for steering the gain of a multiple antenna Global Positioning System (GPS) receiver toward a plurality of a GPS satellites simultaneously is provided. The GPS signals of a known wavelength are processed digitally for a particular instant in time... | 06/02/1992 |
| 5099248 | Transmission signal direction finding apparatus and method An apparatus and method for determining the direction of origin of a received transmission signal using a spinning antenna pair generally provides the steps and apparatus for measuring the phase difference between signals simultaneously received, coarsely... | 03/24/1992 |
| 4639733 | Direction finding An interferometer type DF system uses an array of five antennas (A,B,C,D,E) arranged at the apices of a regular pentagon to define five wide apertures along the sides of the pentagon and a further five apertures along the diagonals. The phases of the sign... | 01/27/1987 |
| 4604626 | Acquisition system employing circular array A phase-angle circuit (24) processes the outputs of an antenna array (12) to apply to a compressive receiver (20) an ensemble of signals having components whose spatial frequencies are proportional to the bearing angle of the electromagnetic plane waves t... | 08/05/1986 |
| 4528566 | Transmitter and receiver locating device A directional locating device transmits pulsed RF signals at a stabilized frequency and is carried by an object the direction of which is to be determined from a distance remote from the transmitter. A one-half wave delay line in the receiver is responsiv... | 07/09/1985 |
